Lifting-jack



(No Model.)

B.- P. WITT.

LIFTING JACK. 4 No. 309,179. v Patented Dec 9, 1884.

"W .Zzzsssas. 15 17522 fur i", a a, a. UNITED BENJAMIN 1?. \VIT", OFHARTSELUS, ALABAMA.

LiFTlNGwACK.

SPECIFICATION forming part of Letters Patent No. 309,179, dated December9, 1884.

Application tiled October 23. 189-1.

To all whom it may concern:

Be it known that I, BENJAMIN Pu Wrrr, a citizen of the United States,residing at lIart selis, in the coi'inty of Morgan and State of'Alabama, have invented certain new and usei'ul Improvements inLit'ting'Jacks; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, rel erencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which Form a part 01' this specification.

This invention relates to lifting-jacks, and has for its object toprovide a jack which is simple in construction, may be easily adjustedinto position for use, be compactly folded when not in use, and whichmay be quieklyadjusted to elevate axles or other objects arranged atdifferent heights from the ground.

The invention consists in certain novel features of construction andcombinations and arrangements of the several parts, as will be morefully hereinafter described, and pointed out in the claims.

Referring to the drawings, Figure l is a perspective view, and Fig. 2 aside View, of my jack with the parts arranged in proper position foruse, and Fig. 3 shows the jack folded as when stored away.

My jack is composed, as shown, of the base A, the standard B, the brace(J, the lever I), bail E, and hook 11. The base is provided with aseries of transverse notches, A, on its upper face, extending from oneend thereof. The standard is pivoted at one end to the base, on the endof the latter, opposite the notches A. I prefer to provide the base witha projection, A formed on its upper side with a recess, A, and to pivotthe standard in said recess as shown, because by such construction thestandard is held from lateral movement and is braced against suchstrain. The brace O is hinged at Oto the standard, near the up per endof said standard, and is adapted at its opposite end to engage innotches A, as shown. By adjusting this standard from one to the other ofthe notches the standard may be raised or lowered, as will be understoodfrom dot- (No model.)

ted and fnlllines, Fig. 2. The lever B is preferably pivoted or hingedon the standard B, and is adapted at one end to rest under and supportan axle or other object which it is desired to raise, and is provided onthe upper side ot'its other or handle end with notches D, fitted to beengaged by the securing-bail.

It will be understood that instead of hinging the lever on the standardthe brace 0 might be extended beyond the standard, in stead of thestandard beyond the brace, and the lever be supported on the base,though I prefer to support it on the standard, because such arrangementis more convenient and pro dnccs a stronger and better device. The bailIt is pivoted at one end to the base, and has its arms extended uponopposite sides of the standard and lever, and extends around the leverin position to engage the notches in the handle end thereof. I prefer topivot this bail to the base, because by such arrangement, when in use,the strain exerted under the upper side of the bail acts between thelever and the base, and serves to hold the brace C more firmly andsecurely in engagement with its notch A. Though, it will be appreciated,the said bail might be supported on the standard without departing fromthe broad principles of my improvement.

It will further be understood that if the brace (3 were hinged at oneend to the base and adjustable at its upper end into engagement with anyone of a series ot'notches formed in the underside of the standard therewould be no departure from the principles of my invention. The hook F ispivoted at one end to the lever, and has its other end adapted to engagea stud, F, projected from the base A, and the parts are adjusted intothe position shown in Fig. 3. This hook F might be made to serve anotherpurposenainely, as a substitute for the bail E-in which .case I wouldprovide the standard B with a number of pins or studs fitted to beengaged by the hook F when the lever had been operated to elevate anydesired object. By this construction said lever will be held inposition, and the bail E might be dispensed with; but I prefer to usesaid bail for the reason before described.

In use the brace G has its lower end adjusted into engagement with anyproper one of the notches A to suit the height of the object which it isdesired to raise,when the point of the lever D is inserted under saidobject, and its handle end is depressed until the object is raised tothe proper point desired, where it will be held by the bail E. When notin use, the brace C is folded under the standard B, the lever and bailare folded onto said parts, and the hook F is engaged with stud F,holding the parts securely in the arrangement shown in Fig. 3, in whicharrangement they may be stored away in a small space, as will beunderstood.

Having thus described myinvention,whatI claim and desire to secure byLetters Patent, 1s

1. The combination of the base, the standard hinged at one endthereto,the brace hinged at one end to the standard, and adapted at itsother end to engage on the base, and the le ver pivoted to the upper endof the standard and having its handle end adapted to be turned downagainst the upper side of the standard, whereby the parts may be foldedinto small compass, substantially as set forth.

2. In a lifting-jack, the combination of the base, the projection Amounted thereon, the standard pivoted to the projection above the planeof the upper side of the base, the brace hinged at one end to the underside of standard, and the lever, substantially as set forth.

3. In a lifting-jack, the combination of the base provided with a pin orcatch, F, the

standard hinged at one end to said base, the 35 brace interposed betweenthe standard and the base, and the lever provided with a hook, F,adapted to engage pin F when the parts are folded together,substantially as set forth.

4. The combination of the base A, provided 0 at one end with notches A,and at its other end with a projection or block, A", provided in itsupper side with a mortise, A and the standard pivoted at one end to thebase within the mortise A with the brace and the 45 lever, substantiallyas set forth.

I 5. The combination,with the base, thestandard,the brace, and thelever, of the bail hinged to the base at one end and having its otherend extending over and engaging the handle end of 0 the lever,substantially as set forth. I

6. lhe lifting-jack substantially as herein described, consisting of thebase A, provided with notches A, the standard B, hinged at one end tothe base, the lever supported on the upper end of said standard, thebrace hinged at one end to the standard, and having its other endadjustable into engagement with, notches A, hook F, and the bail hingedat one end to the base, and having its other end adjustable intoengagement with the handle end of the lever, substantially as set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

BENJAMIN P. XVITT.

Witnesses:

J. M. FERGUSON, G. A. TORRENOE.

